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在建筑机械维修中,经常需要更换长度在500mm以上的花键轴,外协加工或购置新件,既难保证时间,成本也高。我们经过认真研究并实践,在X6030铣床(其规格为300×1000mm,仅能加工350mm长的花键轴)上加工出500mm以上的花键轴。其步骤如下: 1.在被加工轴(毛胚料)的花键端侧,焊接一根长约80～100mm的棒料,其直径小于花键轴直径,如图。 2.在精车花键轴时,同时加工A端,使其直径小于花键根径。并严格保证A与B的同心度。 3.将A端夹在铣床的分度头上,B端用平口钳夹紧并垫好,然后找正整个工件,即加工所需花键。当铣完一槽后,松开B端,摇动分度头至下槽,找正后加工下一槽,余类推。
In the maintenance of construction machinery, spline shafts with a length of more than 500 mm are often required to be replaced. Outsourcing processing or purchase of new ones is difficult to ensure time and cost. After careful research and practice, we have worked out spline shafts of 500mm or more in the X6030 milling machine (its dimensions are 300 x 1000mm and can only process spline shafts with a length of 350mm). The steps are as follows: 1. Weld a bar material with a length of about 80 to 100 mm on the splined end of the machined shaft (raw stock), the diameter of which is smaller than the diameter of the spline shaft, as shown in the figure. 2. When finishing the spline shaft, process the A end at the same time to make the diameter smaller than the spline root diameter. And strictly guarantee the concentricity of A and B. 3. Clip the A end on the indexing head of the milling machine, clamp the B end with a flat-nose pliers, and then align the entire work piece, ie the required splines for machining. After milling a slot, loosen the B end, shake the indexing head to the lower slot, correct the next slot after processing, and so on.